Unravelling Antarctica’s past through the stratigraphy of a deep ice core: an image-analysis study of the EPICA-DML line-scan images
Polar ice research has undergone great progress in the last six decades. One of its recent technological achievements has been the development of new techniques for digital image recording and analysis of ice-core stratigraphy and microstructure. In this work we investigate one such image records, n...
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Online Access: | http://hdl.handle.net/10810/47395 |
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ftunivpaisvasco:oai:addi.ehu.eus:10810/47395 2023-05-15T13:56:39+02:00 Unravelling Antarctica’s past through the stratigraphy of a deep ice core: an image-analysis study of the EPICA-DML line-scan images Morcillo Juliani, G. Faria, S. H. Kipfstuhl, S. 2020 application/pdf http://hdl.handle.net/10810/47395 eng eng Elsevier info:eu-repo/grantAgreement/EC/NERC/NE/L001195/1;EUS/BERC/BERC.2014-2017 info:eu-repo/grantAgreement/MCIU/RTI2018–100696–B–I00 info:eu-repo/grantAgreement/MINECO/RYC–2012–12167 EUS/BERC/BERC.2018-2021 ES/1PE/MDM-2017-0714 https://dx.doi.org/10.1016/j.quaint.2020.07.011 QUATERNARY INTERNATIONAL (2020) 1040-6182 http://hdl.handle.net/10810/47395 info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by-nc-sa/3.0/es/ © 2020 Elsevier Ltd and INQUA. All rights reserved. Atribución-NoComercial-CompartirIgual 3.0 España CC-BY-NC-SA Antarctica Image analysis Ice cores EDML info:eu-repo/semantics/article 2020 ftunivpaisvasco https://doi.org/10.1016/j.quaint.2020.07.011 2022-11-30T00:20:57Z Polar ice research has undergone great progress in the last six decades. One of its recent technological achievements has been the development of new techniques for digital image recording and analysis of ice-core stratigraphy and microstructure. In this work we investigate one such image records, namely the line-scan image records of the EPICA-DML (European Project for Ice Coring in Antarctica, Dronning Maud Land) deep ice core. These images provide a multiscale depiction of the stratigraphy and structure of the Antarctic Ice Sheet. While previous studies have focused on the ice-core optical stratigraphy on the micro- and mesoscale (<1 mm and 10−3–1 m, respectively), in this work we present several methods to obtain fast and reliable information on the ice-core stratigraphy on the macroscale (1–103 m), including the full ice-sheet thickness. The paleoclimatic relevance of the ice-core optical stratigraphy on the macroscale is demonstrated through the comparison of the line-scan grey-value record of the EPICA-DML deep ice core with its mineral dust record, which is used as a proxy for microinclusions and for several other types of climate proxies. Additionally, we introduce a novel method to estimate the macroscopic air-bubble concentration (including number and size of bubbles) in ice cores, which is simpler, faster, and almost as reliable as painstaking microscopic studies. After a brief excursion on the relation between macroscopic and mesoscopic measures of optical stratigraphy, we close this work by making the case for a multi-measure analysis of ice-core line-scan images, which enables us to obtain a broad perspective of the optical stratigraphy of the whole ice core, with relevance for paleoclimate and ice-sheet-flow studies. This research is supported by the Spanish Government through the María de Maeztu excellence accreditation 2018–2022 (Ref. MDM-2017-0714), and by the Basque Government through the BERC 2018–2021 programme. SHF acknowledges support from the Spanish Ministry of Science, Innovation, ... Article in Journal/Newspaper Antarc* Antarctic Antarctica DML Dronning Maud Land EPICA ice core Ice Sheet ADDI: Repositorio Institucional de la Universidad del País Vasco (UPV) Antarctic Dronning Maud Land The Antarctic Quaternary International 566-567 6 15 |
institution |
Open Polar |
collection |
ADDI: Repositorio Institucional de la Universidad del País Vasco (UPV) |
op_collection_id |
ftunivpaisvasco |
language |
English |
topic |
Antarctica Image analysis Ice cores EDML |
spellingShingle |
Antarctica Image analysis Ice cores EDML Morcillo Juliani, G. Faria, S. H. Kipfstuhl, S. Unravelling Antarctica’s past through the stratigraphy of a deep ice core: an image-analysis study of the EPICA-DML line-scan images |
topic_facet |
Antarctica Image analysis Ice cores EDML |
description |
Polar ice research has undergone great progress in the last six decades. One of its recent technological achievements has been the development of new techniques for digital image recording and analysis of ice-core stratigraphy and microstructure. In this work we investigate one such image records, namely the line-scan image records of the EPICA-DML (European Project for Ice Coring in Antarctica, Dronning Maud Land) deep ice core. These images provide a multiscale depiction of the stratigraphy and structure of the Antarctic Ice Sheet. While previous studies have focused on the ice-core optical stratigraphy on the micro- and mesoscale (<1 mm and 10−3–1 m, respectively), in this work we present several methods to obtain fast and reliable information on the ice-core stratigraphy on the macroscale (1–103 m), including the full ice-sheet thickness. The paleoclimatic relevance of the ice-core optical stratigraphy on the macroscale is demonstrated through the comparison of the line-scan grey-value record of the EPICA-DML deep ice core with its mineral dust record, which is used as a proxy for microinclusions and for several other types of climate proxies. Additionally, we introduce a novel method to estimate the macroscopic air-bubble concentration (including number and size of bubbles) in ice cores, which is simpler, faster, and almost as reliable as painstaking microscopic studies. After a brief excursion on the relation between macroscopic and mesoscopic measures of optical stratigraphy, we close this work by making the case for a multi-measure analysis of ice-core line-scan images, which enables us to obtain a broad perspective of the optical stratigraphy of the whole ice core, with relevance for paleoclimate and ice-sheet-flow studies. This research is supported by the Spanish Government through the María de Maeztu excellence accreditation 2018–2022 (Ref. MDM-2017-0714), and by the Basque Government through the BERC 2018–2021 programme. SHF acknowledges support from the Spanish Ministry of Science, Innovation, ... |
format |
Article in Journal/Newspaper |
author |
Morcillo Juliani, G. Faria, S. H. Kipfstuhl, S. |
author_facet |
Morcillo Juliani, G. Faria, S. H. Kipfstuhl, S. |
author_sort |
Morcillo Juliani, G. |
title |
Unravelling Antarctica’s past through the stratigraphy of a deep ice core: an image-analysis study of the EPICA-DML line-scan images |
title_short |
Unravelling Antarctica’s past through the stratigraphy of a deep ice core: an image-analysis study of the EPICA-DML line-scan images |
title_full |
Unravelling Antarctica’s past through the stratigraphy of a deep ice core: an image-analysis study of the EPICA-DML line-scan images |
title_fullStr |
Unravelling Antarctica’s past through the stratigraphy of a deep ice core: an image-analysis study of the EPICA-DML line-scan images |
title_full_unstemmed |
Unravelling Antarctica’s past through the stratigraphy of a deep ice core: an image-analysis study of the EPICA-DML line-scan images |
title_sort |
unravelling antarctica’s past through the stratigraphy of a deep ice core: an image-analysis study of the epica-dml line-scan images |
publisher |
Elsevier |
publishDate |
2020 |
url |
http://hdl.handle.net/10810/47395 |
geographic |
Antarctic Dronning Maud Land The Antarctic |
geographic_facet |
Antarctic Dronning Maud Land The Antarctic |
genre |
Antarc* Antarctic Antarctica DML Dronning Maud Land EPICA ice core Ice Sheet |
genre_facet |
Antarc* Antarctic Antarctica DML Dronning Maud Land EPICA ice core Ice Sheet |
op_relation |
info:eu-repo/grantAgreement/EC/NERC/NE/L001195/1;EUS/BERC/BERC.2014-2017 info:eu-repo/grantAgreement/MCIU/RTI2018–100696–B–I00 info:eu-repo/grantAgreement/MINECO/RYC–2012–12167 EUS/BERC/BERC.2018-2021 ES/1PE/MDM-2017-0714 https://dx.doi.org/10.1016/j.quaint.2020.07.011 QUATERNARY INTERNATIONAL (2020) 1040-6182 http://hdl.handle.net/10810/47395 |
op_rights |
info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by-nc-sa/3.0/es/ © 2020 Elsevier Ltd and INQUA. All rights reserved. Atribución-NoComercial-CompartirIgual 3.0 España |
op_rightsnorm |
CC-BY-NC-SA |
op_doi |
https://doi.org/10.1016/j.quaint.2020.07.011 |
container_title |
Quaternary International |
container_volume |
566-567 |
container_start_page |
6 |
op_container_end_page |
15 |
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1766264181611298816 |